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notsponge [240]
1 year ago
15

Expand and simplify (2x + 3) (x + 7)

Mathematics
1 answer:
RUDIKE [14]1 year ago
5 0

Answer:

2x^{2} +17x+21

Step-by-step explanation:

multiply the 2x by x and 7 and then multiply 3 by x and 7. you will get 2x^{2}+14x+3x+21. combine like terms so add 14x to 3x and thats the only like trerms in the equation. so 2x^2+17x+21

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Select the domain and range of F. F = {(x, y ) | x + y = 10}. Domain: {10} Range: {10} Set F is not a function and does not cont
sertanlavr [38]

Answer:

Domain: All Real Numbers

Range: All Real Numbers

Step-by-step explanation:

F is

F = {(x, y ) | x + y = 10}

(x,y) is the ordered pair

x + y = 10  is the expression

We can rearrange it

y = 10 - x

And then we can plot it using a graphing calculator. See attached image

By looking at the plot and examining the expression, we can see that there are no restrictions over x or y.

This means that the domain and range are all real numbers

Domain: All Real Numbers

Range: All Real Numbers

F is a function because it is a relation that associates each element x to a single element y.

4 0
3 years ago
PLS help me Order four and seven tenths repeating, negative four and eight ninths, 490%, and −4.9 from least to greatest.
Digiron [165]

The order from least to greatest negative four and seven tenths repeating, negative four and eight ninths, 490%, and −4.9 from least to greatest is; option A

  • −4.9,
  • negative four and eight ninths
  • four and seven tenths repeating
  • 490%,

<h3>Ascending order</h3>

four and seven tenths repeating

= 4.77777777

negative four and eight ninths

= -4 8/9

= -4.888888888888888

490%

= 490/100

= 4.9

−4.9

Rearranging from least to greatest (ascending order)

  • -4.9
  • -4.888888888888888
  • 4.77777777
  • 4.9

Learn more about ascending order;

brainly.com/question/12783355

#SPJ1

6 0
2 years ago
What is the solution of the equation below?<br> x² - 4= - 5
madam [21]

Answer:

Not possible to work out

Step-by-step explanation:

NO Explanation can be explained as this question cannot be solved

8 0
2 years ago
I need help with question 2 !!
Stells [14]

Answer:

sorry but idk

Step-by-step explanation:

8 0
3 years ago
(-4) (-4) rewrite expression use exponent rather then repeating multiplication
vekshin1

Answer:4^2 or (-4)^2

Step-by-step explanation:

I don't really know how to explain it. I can try if you want

4 0
3 years ago
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